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\addcontentsline{toc}{chapter}{Acknowledgments}	

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{\Large \bf Acknowledgments}
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Many colleagues and friends have given me their time and support during the process of completing my master thesis and I would like to take this opportunity to thank each and every one of them. This has been the culmination of my Master studies and every one has been a big part of it.\\

First of all, I would like to thank my parents, Mr. Gokul Pati and Dr. Rita Tripathy Pati, my elder brother, Mr. Tilak Pati and my grandmother, Mrs. Yasodhara Tripathy for the constant love and unconditional support they gave me to pursue my dreams.\\

I would like to express my sincerest gratitude towards my supervisor, Prof. Dr. Nassir Navab for giving the guidance and support that was needed to bring this project to fruition. His encouragement and time were invaluable for making sure that I worked in my own way and got the requisite results.\\

I am extremely grateful to my advisor, Pierre Chatelain for his enduring support during the entire duration of my thesis. It has been an absolute pleasure working with the research group and I feel privileged to have been a part of it. His feedback has enabled me to fine-tune my work in order to get the best possible results while at the same time making sure I don't lose sight of the bigger goals of the project.\\

I would like to mention all my friends, especially Nicola Rieke, Hemal Naik, Marco Esposito and Susanne Schmalkalt with whom I have had countless discussions on how to make the math work. Last and not the least, the completion of this thesis would not have been possible had it not been for the comfort provided by Ms. Shwetarupalika Das during the times my motivation and confidence were at their lowest.\\ \\

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Thank you!\par
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